Boss,
The answer is YES to all your questions. You can mute whatever tracks you want to and send whatever ones you want. You can put whatever sound you want to send to the drummer on one of the tracks and send it out anyone of the four outputs.
The only one I'm not sure about is playing the midi file and then playing over the top of it, I think you can on this one.
About the patches and selecting them, you could work that a few ways, if I understand what you're trying to do correctly.
1. You could take an existing style and put up to 4 voices (patches) in it and just mute or un mute as needed. In this mode you could actually put together 4 STS (single touch) templates if you will with 4 different leads voices in each for a total of 16 and switch between them and then save it as a user style.
2. You could put together a list of your favorite voices into a user program bank and just go down the list gig night.
3. You could also put a performance patch together which could have at least 8 voices on it.
Finally about the use as a controller...I use it to control a Triton Rack and an EMU Planet Earth without a problem on either. The cool thing about the T. Rack too, is that you can access the arppegiator, so you wind up with the abilities of an arranger and a workstation.
By the way, you said something in another post about sitting on the fence re: a PA....not me I felt it was the best all around arranger board, when I tried them. I like mine very much. Of course I hate Korg and their total lack of support...but like the board. (They have put up a seperate site for the PA by the way, so there's more support on this one then I have seen them provide on anything else.) It's not to say the others are junk, they're not I just thought the PA 80 won my taste test. You're also choosing between it and the Motif, which is a great keyboard too (I just traded mine in for the PA). These are really 2 different animals though, with 2 almost diametrically opposed feels to them.
Terry
[This message has been edited by Jocko (edited 11-21-2001).]
[This message has been edited by Jocko (edited 11-21-2001).]